On Sun, 19 Oct 2014, Marc Glisse wrote:
> Hello,
>
> looking though the patterns on the branch (not specifically the ones attached
> here), I am surprised to see so few calls to has_single_use. In RTL-land, we
> don't even valueize if there are several uses, so the question doesn't occur.
> In ge
On Fri, 17 Oct 2014, Jakub Jelinek wrote:
> On Wed, Oct 15, 2014 at 01:40:49PM +0200, Richard Biener wrote:
> >
> > This adds a bunch of simplifications with constant operands
> > or ones that simplify to constants, such as a + 0, x * 1.
> >
> > It's a patch mainly to get a few questions answere
Hello,
looking though the patterns on the branch (not specifically the ones
attached here), I am surprised to see so few calls to has_single_use. In
RTL-land, we don't even valueize if there are several uses, so the
question doesn't occur. In generic, we assume everything is single use
(CSE c
On Wed, 15 Oct 2014, Richard Biener wrote:
>Caveat2: the GENERIC code-path of match-and-simplify does
>not handle everything fold-const.c does - for example
>it does nothing on operands with side-effects - foo () * 0
>is not simplified to (foo(), 0). It also does not
>get the
On Wed, Oct 15, 2014 at 01:40:49PM +0200, Richard Biener wrote:
>
> This adds a bunch of simplifications with constant operands
> or ones that simplify to constants, such as a + 0, x * 1.
>
> It's a patch mainly to get a few questions answered for further
> pattern merges:
>
> - The branch uses
